COORDINATE SYSTEM

 

Description: The functions in this menu create and modify local coordinate systems.

 

Note: The COORDINATE SYSTEM command requires several submenus.  To help guide the user, each submenu is described in the following subsections.

 

Usage:

1.   DSI prompts:

            >    ENTER COMMAND

 

9.4.2 Coordinate System Menu

 

2.  After the user enters the appropriate system, DSI lists the options specific to that system.

 

-CREATE

 

Description: This function creates local coordinate systems.  The CS command is used in conjunction with the ASSIGN COORDINATE SYSTEM TO NODE command.

 

Usage:

1.   DSI prompts:

>  SELECT LOCAL SYSTEM TYPE

NODES

SYSTEM

VECTOR

 

2.   DSI prompts the user to create a local system.  A thorough explanation of how to create a local coordinate system is covered in Local Coordinate System, Section 2.16.

 

3.        After the user enters one of the options above, the local coordinate system appears on screen with its C.S. number.

 

-DELETE

 

Description: This function deletes local coordinate system sets from the database.

 

Usage:

1.   DSI displays the DEFINE COORDINATE CARD LIST and prompts:

>   SELECT CARD TO DELETE

 

2.          EXIT deletes the selected coordinate system from the database and resets the nodes to the global system.

 

Note: To remove the local systems/definitions from individual nodes, the user must reassign the nodes to the global coordinate system (refer to ASSIGN COORDINATE SYSTEM on page 3 of this section).

 

-ERASE UNREF. LOCAL

 

Description: This function allows the user to delete any local coordinate systems not referenced by any entity in the model.

 

-MODIFY

 

Description: This function modifies the definition of an existing local coordinate system.

 

Usage:

1.   DSI displays the define coordinate card list and prompts:

         >   EXIT TO CONTINUE

 

2.   After selecting the coordinate system, DSI displays the CSYS DEFINITION CARD, which allows the user to select and edit the coordinate systems data.

 

3.   Once the user accepts the modified card, the new local system appears on the screen. All local systems belonging to the modified coordinate system automatically adjust to match the labeled coordinate system.

 

-CURRENT

 

Description: This function switches the current coordinate system from local to global.

 

-DISPLAY ON/OFF

 

Description: This function toggles the display of local coordinate systems on or off.

 

-RENUMBER

 

Description: This function changes the ID of selected local coordinate systems. The user may select individual local coordinates, or may renumber all, or a portion of the local coordinate systems in the model database.

 

-TRANSFORM

 

Description: This function allows the user to change the origin of coordinate systems.